Limiting Reagent

Limiting reagentis the reactant that is used up first in a chemical reaction. This reagent limits the amount of overall product formed. on the other hand , an excess reagemt is the reactant that is not used up during a chemical reaction.





Practice Problems

The equation for the complete combustion of ethene (C2H4) is C2H4 (g) + 3O2(g) ---à 2CO2(g) + 2H2O(g). If 2.70 mol C2H4 is reacted with 6.30 mol O2. Identify the limiting reagent.

The equation below shows the incomplete combustion of ethene C2H4 (g) + 3O2(g) ---à 2CO2(g) + 2H2O(g). If 2.70 mol C2H4 is reacted with 6.30 mol O2,
a. identify the limiting reagent
b. calculate the moles of water used.